Combined door and window stop and alarm.



J. SIMPSON. COMBINED DOOR AND WINDOW STOP AND ALARM.

APPLICATION FILED SEPT. 29, 1911.

Patented Oct. 15,1912.

COLUMBIA PLANOGRAPH (IO-.WASHINGTON, 0. c4

:rosnrn SIMPSON, or DENVER, COLORADO;-

COMBINED DOOR AND WINDOW STOP AND ALARM.

Specification of Letters Patent.

Patented Oct. 15, 1912.

Application filed September 29, 1911. Serial No. 651,966.

To all whom it may concern:

Be it known that I, JOSEPH SIMPSON, a citizen of the United States, residing in the city and county of Denver and State of Colorado, have invented certain new and useful. Improvements in Combined Door and Window Stops and Alarms; and I do cleclare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part of this specification.

My invention relates to improvements in 'a combined door or window stop and alarm,

the object being to provide a device which may be so located, with reference to a door;

prevent the opening movement, but will also simultaneously set off an alarm, which will continue to ring under pressure of the door or Window until its spring is run down.

device consistsof a casing of triangular shape, one side of the casing,viz., the top or that which corresponds with the hypote-g nuse of a right angle triangle, (which is? the shape of the casing),is hinged at one side and provided with a projection which normally rests upon a spring which holds, an escapement pawl in position to look at train of gears, which are normally under the stress of a spring, whereby, when the escapeor window, that the opening of the door orj window will not only interpose a. stop to? ment pawl is released from the action of its retaining spring, the train of gears is set in motion and the escapement pawl vibrated to actuate the hammer of a bell, the gong being applied to the spindle upon which the main, gear is supported in such a manner that the One end of the main spring is connected with the spindle, while the other end is connected with a star-wheel, which is, .in turn,

connected with a sleeve loose on the shaft, the said sleeve carrying the gear which is hammer, which acts on the crank is connected with the escapement pawl.

spindle may be rotated to wind the main "spring, a ratchet being applied to the spindle and locked against rotation by a dog.

. gong-hammer, will be vibrated, until the 5 the casing to hold the latter against moving More specifically considered, present When the device is in use, it is set upon the floor of a room, adjacent the door or suitably mounted on the window frame in the path-of the sash, which, when moved for opening purposes, acts upon the extremity of the hinge plate, remote from the hinge. In either case, the door or the sash, during its initial opening movement, acts upon the said plate to depress the latter and cause the pro ection thereon to release the retaining spr1ng,normally acting on the escapement pawl, as heretofore explained. As long as the pressure is applied to the hinge plate, the escapement pawl, together with the main spring has exhausted its power.

Having briefly outlined my improved construction, I will proceed to describe the same in detail, reference being made to the accompanying drawing, in which is illustrated an embodiment thereof.

In this drawing: Figure 1 is a side elevation of my improved device, the socket set into the floor, for receiving a projection on bodily in response to the opening movement of the door, being shown in section. Fig. 2 is a top plan view of thedevice with the hinge plate removed to expose the mechanism within. Fig. 3 is a section, taken on the line 3-301? Fig. 2. Fig. 4 is a section, taken on the line 4.& of Fig. 2. 'Fig. 5 is a rear end elevation of the device. Fig. 6 is a sectional view in detail, illustrating the manner of connecting the gong with the main. spindle.

The same reference characters indicate the. same parts in all the views.

In this application, the device will be described with special reference to its operation in connection with a door, though it is equally applicable for use in connection with a window." V 1 a Let the" numeral -5 designate a casing,

which, in side view, has the shape of a right I angle triangle, whose base 6 rests upon the floor, while its vertical wall 7 is farthest from the door when the device is applied. Through the two side members 8 of the easing at the upper extremity of the wall 7 is fast a pin, upon which aplate 9 is" hinged, the :said plate being provided with ears 10 for the purpose. This plate is provided, in-

termediate its extremities, with a projection 12, which normally rests on one end 13 of a spring 14. A disk 15 is mounted on the wall 7 of the casing, as shown at.16, an angle plate 17 being employed, one member of the plate being riveted to the wall 7 of the casing, while the other member is riveted to the disk 15. This is best illustrated in Fig. 2. The spring 14 is secured to a disk 4 by a fastening device 18. The opposite extremity of the spring 14 is hook-shaped, as shown at 19, and engages a ratchet disk 20 fast on the main spindle 21, which is journaled in the side plates 8 of the casing. The spindle 21 protrudes through the casing on one side,

its protruding extremity being threaded to 15 receive the threaded socket of a female member 22, centrally secured to the gong 23. When the gong is screwed upon the spindle to its limit of movement, the continued movement of the gong in the same direction will rotate the spindle to wind a spring 24, one extremity of which is secured to the spindle, while its opposite extremity is made fast to an arm of a star-wheel 26, the arms of this wheel projecting outwardly around the coiled spring 24 to limit the opening movement of the spring, as its tension is released. The manner of securing the extremity of the spring to the arm 25 is indicated at 27 ,see Fig. 2.

An escapement pawl 28 is pivoted to the disk 15, as shown at 29, and is provided with an arm 30 normally acted on by the extremity 13 of the spring 14, whereby the extremity 31 of the said pawl is held in engagement with a tooth 32 of a wheel 33 fast on a spindle 34 carrying a pinion 35, meshing with a larger wheel 36, fast 011 a spindle 37, carrying a pinion 38, meshing with a gear 39 fast on a spindle 40, carrying a pinion 41, which meshes with the main gear 42 fast on a sleeve 43 loose on the main spindle 21. This sleeve is of considerable length, the gear 42 being fast on one extremity thereof and the star-wheel 25 at the opposite extremity.

Normally, or when the device is set in position for use, the hinge plate 9 is supported above the adjacent edges of the side walls 8 of the casing, as shown by full lines in Fig. 1, this position being maintained by virtue of the engagement of the projection 12 and the plate 9 with the bent extremity 13 of the spring 14. Now, assuming that the device is placed in the position shown in Fig. 1, with the lower extremity of its hinge plate 9 in suitable proximity to the lower end of a door 44, as an attempt is made to open the door, the latter will move from the full line to the dotted line position, and in so doing will force the plate 9 from its full line to its dotted line position, moving the projection. 12 inwardly and depressing the bent end 13 of the spring 14 sufliciently to release the escapement pawl 28 from the action of said spring. The

coiled spring 24, which it is assumed is wound up or placed under tension, will then act through the star-wheel 25 to rotate the sleeve 43, whereby the main gear 42 is rotated and the train ofgears, composed of the members 41, 39, 38, 36, 35 and 33, actuated, the gear 33 acting directly upon the escapement pawl 28, whereby the extremities 31 and 45 of the pawl are alternately engaged by the teeth of the said gear. The pawl is thus rocked or vibrated upon its pivot 28, and a corresponding movement imparted to the hammer 46, which is connected with the pawl by an arm 47; This hammer protrudes within the gong 23, which is applied to the main spindle 21 outside of the casing. At the angle of the casing, formed by the wall 5 and base 6, is located an inclined projection 49, which is adapted to enter a recess 50, preferably provided with a metal lining 51, secured to-the floor by screws 52, passed through flanges 53 and 54 formed on the said lining.

When the casing is set, as illustrated in Fig. 1, the projection 49, by virtue of its engagement with the recess 50, formed-in the floor, is prevented from movingaway from the door in response to the opening push of the latter. Hence, the opening 95 movement acts entirely upon the hinge plate 9, causing the latter to operate the alarm, as heretofore explained. At the same time, it will be understood that the device serves as a stop to prevent the opening of the door farther than to the limited degree required for moving the hinge plate 9 from the full line to the dotted line position.

Instead of forming a recess 54 in the floor for the purpose of receiving the projection 49 of the casing, the said projection 49 may be provided with teeth 55, which maybe sufliciently sharp to penetrate the floor whereby the casing is prevented from slipping inwardly under the pressure of the opening movement of the door.

The stationary plate 4 is supported by means of the spindles 34, 37 and 40, which are connected with the disk 15, the latter being secured to the casing, as heretofore explained. i l A Having thus described my invention, what I claim is j 1. The combination with a casing carrying alarm mechanism, the said casing being. of triangular shape and having one of its sides hinged to the casing at one extremity, its opposite extremity being located in the path of a door or window sash, the said plate having-an interior projection whereby the hinged plate is supported aishort distance from the body of the casing, a spring upon which the projection of the hinged plate rests, an escapement pawl normally acted on by the said spring to lock the pawl against movement, and a spring actuated train of gears with which the escapement pawl is connected in operative relation, the escapement pawl carrying a hammer and a gong arranged in operative relation with the hammer, the arrangement being such that, as the first-named spring is acted on by the projection of the hinged plate, the escapement pawl is unlocked and acted on by the train of gears to vibrate the hammer, substantially as described.

2. In a combined door and window stop and alarm, the combination with a casing having the shape of a right angle triangle, a gong carried thereby and equipped with a vibrating hammer, one side of the casing having a hinged plate movable toward and away from the body of the casing, and provided with an interior projection, a spring upon which the projection of the hinged plate rests, and an escapement pawl nor mally acted on by the said spring to lock the pawl against movement, and a spring motor with which the escapement pawl is connected in operative relation, the vibrating hammer being connected with the said pawl, and the latter being arranged to be released by the hinged plate action upon the spring,

during the movement of said plate toward the casing, substantially as described.

3. The combination with a casing having the general shape in side View of a right angle triangle and means located thereon to prevent movement, the said casing having the wall opposite the right angle hinged at the extremity of the perpendicular side, remote from the base, the said hinged wall having an interior projection, a spring engaged by said projection and normally holding the hinged wall away from the body of the casing, the extremity of the wall remote from the hinge being adapted to be located in suitable proximity to a door or window, and alarm mechanism normally held inactive by the said spring, but connected to be released by the pressure on the said spring due to the movement of the hinged plate, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

JOSEPH SIMPSON.

Witnesses:

F. E. O. BOWEN, A. EBERT OBRIEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

